Full list of all 75 Fallout: New Vegas achievements worth 1,655 gamerscore. It takes around 60-80 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 5 DLC packs containing 25 achievements worth 655 Gamerscore.
Won 30 games of Caravan.
Won 3 games of Caravan.
Recruited all companions.
Picked 50 pockets.
Completed The Legend of the Star.
Completed No Gods, No Masters.
Completed Wild Card.
Completed Eureka!
Completed For the Republic.
Got banned from all the Strip's casinos.
Completed Veni, Vidi, Vici.
Healed 10,000 points of damage with Stimpaks.
Completed Render Unto Caesar.
Completed Arizona Killer.
Reached 30th level.
Completed Talent Pool.
Hacked 25 terminals.
Healed 10,000 points of damage with food.
Caused 10,000 damage with Explosives.
You Discovered 125 locations.
Caused 10,000 damage with Energy Weapons.
Caused 10,000 damage with Melee Weapons.
Discovered all snow globes.
Installed 20 weapon mods.
Caused 10,000 damage with Unarmed weapons.
Played the game from start to finish in Hardcore Mode.
Completed All or Nothing.
Completed The House Always Wins.
Completed You'll Know It When It Happens.
Played 10 spins of Roulette.
Completed Ring-a-Ding-Ding.
Reached 20th level.
Made 50 Speech challenges.
Completed Volare!
Completed Return to Sender.
Discovered 50 locations.
Crafted 20 items.
Picked 25 locks.
Completed That Lucky Old Sun.
Completed They Went That-a-Way.
Played 10 spins of Slots.
Played 10 hands of Blackjack.
Reached 10th level.
Completed G.I. Blues.
Sold 10,000 caps worth of goods.
Caused 10,000 damage with Guns.
Completed Come Fly With Me.
Recruited a companion.
Repaired 30 items.
Completed Ain't That a Kick in the Head.
Trapped Father Elijah in the Sierra Madre's Vault.
Confronted Father Elijah in the Sierra Madre's Vault.
Completed the Sierra Madre Gala Event.
Recruited Dean Domino, Christine and Dog.
Collected 500 Sierra Madre Chips.
Crushed the White Legs.
Evacuated Zion.
Scouted the Zion Valley for signs of the White Legs.
Resupplied Daniel and the Sorrows.
Arrived at Zion.
Completed Old World Blues.
Made up your mind... about your brain.
Recovered X-8 vertebrae-pulse-de-sensitizer frequency!
Recovered X-13 cardiac regulator sneaky suit!
Reactivated all of the Sink's robotic assistants.
Detonated all of the warheads in the Divide.
Completed Lonesome Road.
Found all of ED-E's upgrades in the Divide.
Decided the fate of all the Divide dwellers.
Acquired all upgrades for the Divide's signature weapon.
Caused 10,000 damage with Gun Runners' Arsenal (GRA) Weapons.
Completed any three Gun Runners' Arsenal (GRA) three star (***) Challenges.
Completed any three Gun Runners' Arsenal (GRA) two star (**) Challenges.
Completed any three Gun Runners' Arsenal (GRA) one star (*) Challenges.
Caused 10,000 damage with unique Mojave Wasteland weapons.